2017 Specialized Stumpjumper FSR Comp 6Fattie vs 2018 Specialized Stumpjumper Comp Alloy 29/6Fattie
The Specialized Stumpjumper Comp Alloy 29/6Fattie size closest to your L is the L. Compare the L instead
What changes on the Specialized Stumpjumper Comp Alloy 29/6Fattie
Compared with the Specialized Stumpjumper FSR Comp 6Fattie in L, the Specialized Stumpjumper Comp Alloy 29/6Fattie in S places the top of the head tube 28 mm lower and 46 mm further back, relative to the bottom bracket. Its wheelbase is 57 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −28 mm
- Lower front end
- Frame reach
- −46 mm
- Shorter frame reach
- Wheelbase
- −57 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Stumpjumper FSR Comp 6Fattie, LSpecialized Stumpjumper Comp Alloy 29/6Fattie, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR Comp 6Fattie L | Specialized Stumpjumper Comp Alloy 29/6Fattie S | Difference |
|---|---|---|---|
| Reach | 435mm | 389mm | −46 mm |
| Stack | 645mm | 617mm | −28 mm |
| Head tube angle | 67.5° | 67.5° | ±0.0° |
| Seat tube angle | 75° | 74° | −1.0° |
| Effective top tube | 611mm | 551mm | −60 mm |
| Chainstay length | 437mm | 437mm | ±0 mm |
| Wheelbase | 1172mm | 1115mm | −57 mm |
| BB drop | 36mm | 36mm | ±0 mm |
| Standover | 766mm | 750mm | −16 mm |
| Seat tube length | 468mm | 396mm | −72 mm |
| Fork length | 551mm | 551mm | ±0 mm |
| Head tube length | 125mm | 125mm | ±0 mm |
| BB height | not listed | 338mm |
Differences are the Specialized Stumpjumper Comp Alloy 29/6Fattie minus the Specialized Stumpjumper FSR Comp 6Fattie. Full charts: 2017 Specialized Stumpjumper FSR Comp 6Fattie, 2018 Specialized Stumpjumper Comp Alloy 29/6Fattie.
Where each sits in its class
Specialized Stumpjumper FSR Comp 6FattieSpecialized Stumpjumper Comp Alloy 29/6Fattie
Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Stumpjumper FSR Comp 6FattieComp 6Fattie | Specialized Stumpjumper Comp Alloy 29/6FattieComp Alloy 29/6Fattie |
|---|---|---|
| Fork | RockShox Revelation RL | RockShox Reba RL |
| Rear shock | RockShox Monarch RT | RockShox Monarch RT |
| Shifter | SRAM GX | SRAM GX |
| Derailleur | SRAM GX | SRAM GX |
| Cassette | SRAM XG-1150 | SRAM XG-1150 |
| Chain | SRAM PC-1110 | KMC X-11 |
| Crankset | Race Face Aeffect | Race Face Aeffect |
| Tire | Specialized Purgatory | Specialized Butcher, Specialized Purgatory |
| Rim | Roval Traverse | Roval Traverse 29 |
| Brake | SRAM Guide R | SRAM Guide R |
| Grips | Specialized Sip Grip | Specialized Sip Grip |
| Dropper post | Specialized Command Post IRcc | not listed |
| Seatpost | Specialized Command Post IRcc | Specialized Command Post IRcc |
| Saddle | Specialized Henge Comp | Specialized Henge Comp |
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